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江西安远县路迳产出的超基性岩筒,是幔源岩浆岩的一个特殊类型,命名为金伯利质煌斑岩。岩筒的Rb- Sr等时线年龄37Ma。该岩筒中含有幔源单斜辉石巨晶和辉石岩、尖晶石橄榄岩、石榴石辉石岩包体,这些巨晶和包体来自上地幔不同深度。本文应用傅立叶变换红外光谱研究了该岩筒中巨晶单斜辉石和3种包体中辉石的含水性,探讨辉石含水量与其成分及来源深度的关系。单斜辉石以3607～3630cm_(-1)和3522～3542cm_(-1)两组吸收谱带为主,斜方辉石存在3410
Ultra-mafic rocks produced by Luoyuan Road, Anyuan County, Jiangxi Province are a special type of mantle-derived magmatic rocks and are named Kimberley-quality lamprophyres. Rock tube Rb-Sr isochron age of 37Ma. The rock tube contains mantle-derived clinopyroxene gabbro and pyroxene, spinel peridotite and garnet pyroxenite inclusions, which come from different depths of the upper mantle. In this paper, the Fourier transform infrared spectroscopy was used to study the water content of pyroxene in three kinds of inclusions and the huge crystal of clinopyroxene in this rock cylinder. The relationship between the water content of pyroxene and its composition and source depth was discussed. The clinopyroxene is dominated by two groups of absorption bands of 3607 ~ 3630cm_ (- 1) and 3522 ~ 3542cm _ (-1), and there are 3410